Rankers Physics

Current Electricity: Practice Problem & Solution

3. The velocity of charge carriers of current (about $1 \text{ ampere}$) in a metal under normal conditions is of the order of (1991)
A fraction of $\text{mm/sec}$
Velocity of light
Several thousand metres/second
A few hundred metres per second

Solution Explained:

To solve this problem, we apply the core principles of Current Electricity. Understanding the underlying formula is key to arriving at the correct answer below:

The drift velocity of electrons in a typical metallic conductor under normal conditions is extremely small, typically on the order of $10^{-4} \text{ m/s}$ or a fraction of a $\text{mm/sec}$.

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